Pipe-flanging machine



June 24, 1930. c. F. scHULT1s 1,765,704

PIPE FLANGING MACHINE Filed Dec. 29. 192'/ Patented June 24, 1930 UNl'l'l-TLD S'liTS PATENT tisana CHARLES F. SCHULTIS, F CLEVELAND, OHO, ASSGNR, BY DIRECT .ANDl MESNE ASSIGNl/IENTS, F ONE-FORTH T0 ISDRE EERZBRUN, OF CLEVELAND, OIO, AND ONEsFOUR-TH T0 S. V'. GLDMAN, OF CLEVELAND, OHIO PIPE-FLANGNG MACHNE Application filed December 29, 1927. Serial No. 243,24@

This invention relates to'a pipe Hanging machine for rolling reversely curved hook flanges on the ends of pieces of seamless tubing and is an improvement upon the macnine disclosed in my copending application Serial No. 211,718, filed August 9, 1927.

The main objects of the present invention are to simplify the flanging mechanism and to provide flanging devices which operate more effectively upon the smaller sizes of tubing.

With the objects above mentioned in View and others which will appear as the description proceeds, the invention may be said to comprise the devices as illustrated in the accompanying drawings hereinafter described and particularly set forth in the appended claims, together with such variations and modifications thereof as will be apparent to one skilled in the art to which the invention. appertains.

Reference should be had to the accompanying drawings forming a part of the specification in which:

Figure 1 is a side elevation of the machine with the tool head and spindle supporting sleeve shown in section.

F 2 is a section taken en the line indicated at 2 2 in Fig. 1.

3 section taken on the line indicated at 3 3 in Fig. 1.

Fig. 4; is a fragmentary side elevation showing the head in the position which it occupies at the completion of the flanging operation.

5 is a sectional view showing a cou'- pling in which the flanged tubing is used.

As shown in the accompanyingdrawing, the machine is provided with a rectangular frame 1 in the form of a continuous bar which may be clamped in a vise 2. The frame is provided on one side with a boss 3 which is tapped and threaded so that it may be screwed onto a threaded supporting member such as a bench clamp or other member secured to a work bench, the frame being reversible so that it may be supported either by the vise or by means of the boss 3. h one side thereof, the frame 1 is provided with a device for clamping a piece of tubing to be lianged and this clamping` device comprises a semi-cylindrical recess 6 formed in the frame 1 anda pivoted clamping member 7 connected to the frame 1 by a hinge 8 and having a semi-cylindrical recess complemental to the recess 6. The frame 1 carries a pivoted bolt Q'beneath the recess 6 and this bolt engages in the slot 10 in the lower end of the hinged clamping member 7,' a wing 11 being provided on the bolt yby which the member 7 may be securely fastened in clamping position. lithin the cylindrical opening formed between the fra-me member and the clamping member 7, there is secured a two part bushing 12, each semi-cylindrical section of which is securedvfto one of the clamping members by means of a screwv 13. rilhe bushing 12 has a diameter corresponding to the external diameter of the tube to be flanged and at its inner end has a projecting rounded rib 111. @n the side directly opposite the tube clamp, theframe 1 is provided with. an internally threaded boss 15 which Yreceives anV externally threaded sleeve 1G which has a handwheel 17 fined to its outer end. rl`he boss 15 is coaxial with the tube receiving bushing 12 and the sleeve 16 has a spindle 18 extending therethrough and rotatable therein. To the inner end of the spindle 18, there is rigidly attached a guide member 19 which is positioned at right angles to the spindle and extends laterally upon opposite sides thereof. Atits outer end, the spindle 18 has fixed thereto a driving member 2O which may be in the form of a handv crank by means of which the spindle may be' rotated in either direction. The contiguous faces of the sleeve 16 and driving `member 20 are counterbored to provide a vchamber 21 in which is mounted a compression coil spring 22 which surrounds the spindle and bears against the sleeve '16 at one end and the driving vmember 20 at the other end. rlhe spring 22 forms a frictional driving connection between the member 2O and the sleeve 18 so that the sleeve 18 will be rotating whenever the frictional resistance to the turning movement of the sleeve is less than the frictional resistance offered by the spring 22 to the turning of the spindle Within the sleeve.

The machine, as so tar described, corresponds substantially With the machine disclosed in my copending application above reierred to, the present invention residing in the pipe Hanging head mounted on the spindle. rhe inn-er end of the spindle 18 is provided with a screw threaded portion projecting beyond the inner end ciC the sleeve 18 and with a shoulder 24 against which the inner end ot' the sleeve 18 bears. lThe guide member 19 has a threaded extension 23 of the spindle, the guidefmember 19 being screwed tightly against shoulder 24. The member 19 forms a support for an adjustable head 25 which has va groove 26 on itsr rear tace Which receives the guide member 19 and flanges 27 which ove'rlie the rear tace or the member 19. Thehead 25 may be slid along the guide memberi 19 and is provided With means for yieldably holding it in adjusted position thereon. The means for yieldably holding the head in a position to which it is adjusted on the guide member consists of afriction plunger 28 mounted ina bore 29 opening to the bottom of the guide member 'receiving groove, the plunger 28 being pressed against the guide member 19 by means or" a'coi'l spring 30 interposed between' the plunger and the bottom oi the bore 29. Movement of the head 25 in one ldirection is limited by the head 31 of a SorenT 32, sore/Wed into one end of the guide member 19, the head 31 projecting past the 'iront face oit' the guide memb'erand forming va lined stopA against which the head'25 abut-s at one limit ot the movement; The movement of the head 25 in' the opposite direction is limited by means of an adjustable stop meinber 33 Which has a sliding lit on theguide member 19' and Which is secured in adjusted position on-the guide member by means of a set 'screw 34. Mounted on the head 25 at one end is a swa'ging member 35 which has a shank 36 fitting in a'soclret -orined in the head and securedin place therein by means ot a 'screw 37. The s'iva'ging member has a base portion Which is transversely elongated and substantially rectangular in i'orm and a swaging point 38 which tapers Ytrom the rectangular base portion. The angle ot taper gradually decreases toward the point 38 so that the tapering edges have a' yconcave curvature. A transverse (nn-'vaturel along the tapering edges is on' centers loi'fllset laterally from the axis of tli'e member so that the tapering point of the swaging member it is toi-ced into a tube has line Contact with the Walls of the tube. The sivaging member 35 is employed to initially spread the Walls or' a tube at the open 'end thereof and this member is positioned when in use coaxial with the' spindle 18 and is gradually forced tvhil-e it is being rotated into the' open end` of the tube. The yhead 25 is provided at one sideof the siva'ging member 35 with two transverse roller receiving channels 39 and 40 which provide end and intermediate ribs 41 and 42 for a roller receiving shaft 43 which extends through the ribs 41 and 42 and is supported at one end in thev sWaging member 35. Between the ribs 41 and 42 and in the channel 39., there Vis mounted a rlanging roller 44 which has a `concave peripheral groove 45 of a shape corresponding to the outer surface ot the flange tok be rolled. Between the rib 42 ot the swaging member 35, the shaft 43 carries an elongated slightly concave 'flange engaging roller 46 which engages the flange ot the tubing at a point diametrically opposite that engaged by the roll-er 44.

As shown in the drawing, a piece of seamless tubing 47 may be clamped Within the sectional bushing 12 With an end portion sufficient to form the flange projecting beyond the end ot the inwardly projecting 1ib 14 or the bushing. The stop member 33 and screw head 31 are prei'erably so positioned that When the head 25 is in engagement With the screr7 head 3l, the swaging member 35 is in Vaxial alignment with the spindle 18 and tube 17 and When the head 25 is in engagement with the stop member 33, the flange roller 44 is positioned with its groove 45 oiiset laterally from the axis of the spindle 18 a distance such that as the spindle is rotated, the groove 45 remains centered With respect to-the annular rib 14. However, if either of the stop members should be positioned too far trom the axis of the spindle, the head 25 Will be automatically centered With respect to the tubing upon engagement of the syvaging member or the Hanging rollers therewith, the thrust on the sWaging member or the Hanging roller engaging with the pipe tending to shift the head to a position in Which the sWaging member or roller are properly centered with respect to the bushing 12 and the friction plunger 28 permitting the necessary movement of the head 25.

At the beginning of the flanging operation, the head 25 is positioned in engagement with the screw head 3l and the swaging member is advanced into engagement with the tubing by turning the hand crank 20. its long as the sWaging member is out of engagement With the tube, the 'sleeve 16 will turn freely and rotate With the spindle 19 dueto the trict-ion of the spring 22 to rapidly advance the swaging member into engagement 'Vith the tubing. is the sivaging member is forced into engagement With the open end of the tube, the .trictio'nal resistance or the sleeve 16 to turning movement is increase-d and the spindle 18 begins to rotate in the sleeve. As the tapering point 38 is Vrotated ivi-thin the open end oit the tubing, the Wall or the tubing at the open end is gradually forced outwardly as shown in' Figs. 1 and 3, the feed of the swa'ging member into the open end of the tubing being eiected from time to time by lll) j coupling such as disclosed in my copendine' means of the hand wheel 17. Since the swaging member has a relatively sharp point and has line Contact with the tube along its opposite tapering edges, it can enter into tubing of extremely small diameter and form an outwardly flaring flange. fter the tube has been acted upon by the swaging member as shown in Fig. 3 of the drawings, the head 25 is positioned as shown in Fig. 4t and is fed into engagement with the tubing to roll the flange of the tubing back upon the beaded edge of the projecting rib 11i, the flange being pressed against the rib 14 by the roller 45, the roller d6 serving to assist in the bending of the flange at the beginning ofthe operation. By operating` the screw 17, the desired pressure may be exerted upon flanging roller so that the outer `surface of the tube dang is rolled into exact conformity with th groove 45 of the Hanging roller while the inner surface of the flange conforms to the surface of the beaded edge of the rib 111-.

The machine of the present invention is intended'for flanging tubing for use with a application Serial No. 211,719, filed Angus 9, 1927. This coupling, as shown in of the drawing, consists of a coupling meinber 19 provided with a threaded socket having a flange receiving rib in the bottom thereof, which is of the same size and shape as the rib 14; upon which the flange of the tubing is formed, the coupling 49 receiving an end of the tubing with the reversely curved flange 48 thereof hooked over the projecting rib 50. The threaded socket of the coupling member i9 receives the threaded end of a complemental coupling member which is provided at its inner end with an annular concave seat 52 which is machined to conform exactly to the machined outer surface of the flange.

lt will be apparent that the present invention provides a very simple and easily adjustable spindle mounting for the pipe "lang-l ing devices which permit the flanging operation to be very rapidly performed. lt will also be apparent-'that the swaging member and flanging rollers are so mounted upon the head that they may be quickly and easily removed or replaced and that the head with the flanging devices thereon may be quickly and easily removed from the spindle.

Vhat l claim is:

1. In a tube flanging machine, a spindle, means for rigidly holding the tube with an end thereof adjacent an end of the spindle and in axial alinement therewith, a transverse guide member fixed to the end of said spindle, a head mounted for adjustment longitudinally of said guide member', a tube swaging member xed to the head, and a tube flanging roller carried by said head, said swaging member and flanging roller being spaced one from the other in a direction CIK land in axial alinement therewith, a transverse guide member fixed to the end of ysaid spindle, a head mounted for adjustment longitudinally of said guide member, a tube swaging member mounted on the head adj acent one end thereof, and a tube flanging roller mounted ony the head adjacent its oppoy1 site end, said Hanging roller being positioned l clear of the tube when the head is so adjusted that the swaging member is in operative position with respect to the tube.

v 8. in a tube ilanging machine, a spindle, g5

means for rigidly holding the tube with an end thereof adjacent an end of the spindle and in axial alinement therewith, a transverse guide member fixed to the end of said spindle, ahead mounted for adjustment longitudinally of said guide member, a tube swaging member mounted on the head adj acent one end thereof, a tube flanging roller mounted on the head adjacent its opposite end, and means for positioning said head with either theswaging member or the flanging roller in tube engaging position.

- et.. ln a tube Hanging machine, a spindle, means for rigidlyv holding the tube with an vend thereof adjacent an end of the spindle f and in axial alinement therewith, a trans.- verse guide member fixed to the end of said spindle, a head mounted for adjustment longitudinally of said guide member, a tapering swaging member fixed to the head adj acent one end thereof, a i'langing roller having a concave flange engaging groove rotatably mounted on the head adjacent the opposite end thereof, and stop members `on saidguide members co-operating with said head to position the lsaine with either the swaging memberor the flanging roller in tube engaging position.

5. ln av tube Hanging machine, a spindle,

means for rigidly holding the tube ywith an f,

end thereof adjacent an end ofthe spindle and in axial alinement therewith, a transverse guide member xed to the end of said spindle, a head mounted for adjustment longitudinally of said guide member, a tapering tube swaging member fixed to the head adjacent one end of the head, a flanging roller mounted on the head adjacent the opposite end thereof, and a flange engaging roller mounted between said swaging member and roller.

6. ln a tube ilanging machine, a tube centering and clamping bushing, a spindle in axial alineinent with said bushing,a guide member fixed to the end of the spindle and extending at right angles thereto, a head slidable onsaid Yguide member, spaced tube Hanging devices onsaid head, and a rictional holding device interposed between said head and guide member for yieldably holding the head in adjusted position on said guide member. Y

7. In a tube Hanging machine, a tube centering' and clamping bushing, a spindle in axial alinement With said bushing, a guide member fixedI to the end of the spindle and extending at right angles thereto, a head slidable on said guide member, a Hanging roller carried by said head, and an elongated roller of a diameter slightly less than that of the Hanging roller mounted on said head alongside said Hanging rol-ler and coaxial therewith.

8. In a tube Hanging machine, a Jframe having a tube centering and clamping bushing, a spindle journaled in the frame in axial ali-nement vvithisaidbusliing, a swaging member carried by said spindle, said swaging member having a tube engaging portion longitudinally concave and taperingto a point, means forV rotating said spindle, and means for imparting an axial feed movement to said Siva-ging member. y

9. Ina tube Hanging machine, a tubel centering and clamping bushing, a spindle in axial alinement With said bushing, and a swaging member carried by said spindle, said sWaging member having a transversely elongated base portion and tapering from the opposite` ends of the base portion to a point and having longitudinally concave and transversely convex tube engaging edges.

l0. In a tube Hanging machine, a tube centeringrand clamping bushing, a spindle in axial alinement With said bushing, and `a sWaging member carried by said spindle, said swaging member having a 'transversely elongated base portion and tapering from the opposite ends of the base portion to a point,

the opposite edges of the tapering enfd of said swaging member being longitudinally concave and said edges being transversely Curved about centers outwardly of the axis of the member to provide line Contact With the Wall of the tube in the svvaging operation.

In testimony vvhereoic I aHCix my signature.

CHARLES F. SCIIULTIS. 

